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. 2015 Feb 26;10(2):e0117500. doi: 10.1371/journal.pone.0117500

Table 2. Final multiple regression models for habitat composition prediction of probability of population membership for eastern chipmunks collected in northern Indiana after stepwise selection.

Width Variable Estimate Std. Error Upper 95% CI Lower 95% CI Pr|z| > 0 Adjusted R2 Model p-value
3m 0.150 0.028
Intercept 0.627 0.001 0.629 0.626 <0.001
Forest 0.211 0.001 0.213 0.209 0.025
NTC 1.650 0.004 1.657 1.643 0.058
Grassland 0.812 0.001 0.814 0.809 0.117
10m 0.127 0.013
Intercept 0.923 0.001 0.924 0.922 <0.001
Forest 0.272 0.001 0.273 0.270 0.024
NTC 1.622 0.004 1.630 1.615 0.053
Grassland 0.819 0.822 0.817 0.002 0.119
Water -0.840 0.002 -0.835 -0.844 0.086
25m 0.143 0.009
Intercept 0.929 0.001 0.931 0.927 <0.001
Forest 0.266 0.001 0.268 0.265 0.028
NTC 1.846 0.005 1.856 1.837 0.081
Grassland 0.837 0.001 0.840 0.834 0.048
Water -0.876 0.003 -0.870 -0.883 0.077
50m 0.158 0.005
Intercept 0.943 0.001 0.944 0.942 <0.001
Forest 0.219 0.001 0.220 0.218 0.063
NTC 1.641 0.023 1.687 1.595 0.099
Grassland 1.018 0.001 1.021 1.015 0.012
Water -0.944 0.002 -0.940 -0.948 0.053
100m 0.147 0.007
Intercept 0.919 0.001 0.920 0.918 <0.001
Forest 0.245 0.001 0.246 0.244 0.040
NTC 1.784 0.003 1.790 1.777 0.082
Grassland 0.930 0.001 0.932 0.928 0.011
Water -0.758 0.002 -0.755 -0.761 0.109
200m 0.186 0.004
Intercept 1.070 0.001 1.072 1.068 <0.001
NTC 2.387 0.007 2.400 2.373 0.089
Grassland 1.375 0.002 1.379 1.371 0.002
TC -2.793 0.007 -2.779 -2.807 0.027
Water -0.789 0.002 -0.785 -0.793 0.097
400m 0.206 0.001
Intercept 1.058 0.001 1.059 1.057 <0.001
NTC 3.410 0.009 3.429 3.392 0.014
Grassland 1.418 0.002 1.421 1.415 0.001
TC -4.391 0.006 -4.380 -4.402 0.002
1000m 0.074 0.025
Intercept 1.068 0.002 1.071 1.064 <0.001
Grassland 0.990 0.002 0.993 0.986 0.005

All metrics were calculated via 1000 bootstrap iterations (average across 1000 iterations or 95% confidence intervals around beta estimates). Each segment width includes the selected variables, coefficient estimates, standard errors, 95% confidence intervals, p-values for each parameter, model adjusted R2, and p-value of the overall model. Variables that had an average p-value < 0.05 are given in bold. Note: NTC = non-treed corridors and TC = treed corridors.